Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
KateMarie123
Group Title
Jimmy’s proof:
Statement 1: In triangle ADC and BCD, AD = BC (opposite sides of a rectangle are congruent)
Statement 2: Angle ADC = Angle BCD (angles of a rectangle are 90°)
Statement 3: DC=DC (transitive property of equality)
Statement 4: Triangle ADC and BCD are congruent (by SAS postulate)
Statement 5: AC = BD (by CPCTC)
Which statement in Jimmy’s proof has an error?
 2 years ago
 2 years ago
KateMarie123 Group Title
Jimmy’s proof: Statement 1: In triangle ADC and BCD, AD = BC (opposite sides of a rectangle are congruent) Statement 2: Angle ADC = Angle BCD (angles of a rectangle are 90°) Statement 3: DC=DC (transitive property of equality) Statement 4: Triangle ADC and BCD are congruent (by SAS postulate) Statement 5: AC = BD (by CPCTC) Which statement in Jimmy’s proof has an error?
 2 years ago
 2 years ago

This Question is Closed

Hashir Group TitleBest ResponseYou've already chosen the best response.1
yeah apparently there is no error !!
 2 years ago

King Group TitleBest ResponseYou've already chosen the best response.1
Yippee!!Cheers for Jimmy!!
 2 years ago

Hashir Group TitleBest ResponseYou've already chosen the best response.1
no i think there can be a mistake in statement five ..... if you consider each statement independent of each other then in statement 5 the student have not mentioned the congruent triangle so may be it can be considered as incorrect ever though the relation is correct
 2 years ago

Aditi_Singh Group TitleBest ResponseYou've already chosen the best response.0
I guess.. there could be an error in statement 1 , where he says that "opposite sides of a rectangle are congruent)" but .. as far as i know, you never say they are 'congruent', you always say they are 'equal'! :/
 2 years ago

King Group TitleBest ResponseYou've already chosen the best response.1
if u consider each statement independent then statement 4 is also wrong as u cannot say 2 triangles are congruent without proof or reason.....
 2 years ago

Hashir Group TitleBest ResponseYou've already chosen the best response.1
thats CPCTC may be incorrect ....
 2 years ago

King Group TitleBest ResponseYou've already chosen the best response.1
as far as i know its CPCT[Corresponding Parts of Congruent Triangles] NOT CPCTC
 2 years ago

King Group TitleBest ResponseYou've already chosen the best response.1
nah CPCTC is rite its [Corresponding Parts of Congruent Triangles are Congruent]
 2 years ago

Aditi_Singh Group TitleBest ResponseYou've already chosen the best response.0
@Hashir : Naah, 'CPCTC' is absolutely correct.. because.. he already proved that the 2 triangles are equal by SAS postulate..
 2 years ago

Hashir Group TitleBest ResponseYou've already chosen the best response.1
i am saying that there may be a possibility .... if we consider each statement independent
 2 years ago

Aditi_Singh Group TitleBest ResponseYou've already chosen the best response.0
CPCTC ('Corresponding parts of congruent triangles are congruent') is nothing but another name/abbr. for CPCT ..
 2 years ago

King Group TitleBest ResponseYou've already chosen the best response.1
Okay Conclusion:Jimmy is an overcautious idiot trying to find a mistake in an absolutely correct proof!!
 2 years ago

Hashir Group TitleBest ResponseYou've already chosen the best response.1
so 3 has a problem ... 3 is incorrect ... got it now
 2 years ago

King Group TitleBest ResponseYou've already chosen the best response.1
whats wrong in 3??DC=DC is not true?
 2 years ago

Hashir Group TitleBest ResponseYou've already chosen the best response.1
bro in transitive property we prove that if a=b and b=c then a=c .... not a=a !!!
 2 years ago

Hashir Group TitleBest ResponseYou've already chosen the best response.1
it doesnt make any sense
 2 years ago

Aditi_Singh Group TitleBest ResponseYou've already chosen the best response.0
@Hashir : I totally agree with you!!.. transitive property is > if a=b, and b=c .. a=c! :P
 2 years ago

Hashir Group TitleBest ResponseYou've already chosen the best response.1
it can be correct if he says that DC=CD
 2 years ago

Hashir Group TitleBest ResponseYou've already chosen the best response.1
but he didnt say that
 2 years ago

King Group TitleBest ResponseYou've already chosen the best response.1
oh!ok!i did not know that!!so yes Jimmy being overcautious helped him as @Hashir the detective finds the criminal eluding his 2 pardnas!
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.